Olivia is 48 inches tall , and 2/3 as tall as her brother cameron. in inches, how tall is cameron?

What is the value of y? round to the nearest tenth

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

The angle of elevation from point a to the top of a cliff is 38 degrees . if point a is 80 feet from the base of the cliff , how high is the cliff ?